A few years ago, we had an accident with a microwave in our coffee room: Smoke came out, caused by someone, likely a person with a Ph.D. (since so few people at this institute do not have such a degree).
Today, another accident happened: Smoke came out of a microwave, which triggered the alarm system and powers were automatically shut down in some servers' room... The consequence is BAD: Most of us cannot work now since we lost our servers and clusters.
The difference is someone claimed the responsibility this time. He emailed all of us, the staff, and said sorry. I admire his courage, especially when he is a student helper, not some Ph.D.